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Method and systems for processing polynucleotides

  • US 10,253,364 B2
  • Filed: 05/15/2018
  • Issued: 04/09/2019
  • Est. Priority Date: 12/14/2012
  • Status: Active Grant
First Claim
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1. A method for generating a sequencing set, comprising:

  • (a) bringing an aqueous fluid comprising a plurality of cells and a plurality of beads in contact with a continuous phase comprising an oil that is immiscible with said aqueous fluid, to generate a plurality droplets, wherein a droplet of said plurality of droplets comprises a single cell from said plurality of cells and a single bead from said plurality of beads, wherein said single bead comprises a plurality of nucleic acid barcode molecules, and wherein nucleic acid barcode molecules of said plurality of nucleic acid barcode molecules comprise a common barcode sequence;

    (b) in said droplet, subjecting messenger ribonucleic acid (mRNA) molecules from said single cell to reverse transcription in the presence of said nucleic acid barcode molecules to yield barcoded complementary deoxyribonucleic acid (cDNA) molecules comprising said common barcode sequence, or a complement thereof;

    (c) breaking or disputing said plurality of droplets, thereby releasing a plurality of cDNA molecules from said plurality of droplets, wherein said plurality of cDNA molecules comprises said barcoded cDNA molecules or derivatives thereof; and

    (d) subjecting said plurality of cDNA molecules or derivatives thereof to one or more reactions to generate said sequencing set,wherein, after (a), said nucleic acid barcode molecules of said plurality of nucleic acid barcode molecules are released from said single bead.

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